How do phospholipids interact with water molecules?
a. phospholipids do not interact with water because water is polar and lipids are nonpolar.
b. the polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract).
c. phospholipids dissolve in water.
d. the polar heads interact with water; the nonpolar tails do not.

it is a solid

explanation:

answer; 4 electrons;

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.